Is there any idiom in English similar to
Horse as boy, (brave) man as kook (are best).
in which boy means sorrel. The latter is obvious.
It is my translation(maybe it is wrong) to describe the idiom I'm seeking.
“Do not be afraid to insist on your rightful case. You should know that a good horse is called sorrel, and a good young man is called crazy (brave, fearless, and bold).” (source)
Sorrel horses are more imposing, more muscular and stronger than other horses. More powerful and warrior riders ride on horses. More powerful and warrior riders ride on horses. The horse is the best, the brave is alive and kicking(that is, powerful and attractive). They call them unflinching, a bit stern(badass), strong, and fair, brave. Since the power is money in the current period, we can compare the horse to the car and the power of the valiant to money.
The horse mentioned here is powerful, strong. And the horse possessing the features is sensed as best horse among the horse species. In the same way, a person behaving differently(may be eccentric) while solving problem, evading issues in a genius and tricky way and smartly is sensed as best.
Atın dorusu, yiğidin delisi makbuldür.